Quiver

Specialized2018

2018 Specialized Fatboy Comp Carbon

Fat

The 2018 Specialized Fatboy Comp Carbon sits more aggressive than most fat bikes, with a steeper head angle and a longer rear center. Reach 395 to 458 mm, stack 602 to 632 mm. The Fatboy Comp Carbon build comes with SRAM GX Eagle shifting and Specialized Ground Control Fat tires.

Source: specialized.com. Checked .

Key facts

Model
Fatboy
Model year
2018
Type
Fat
Geometry labels
S, M, L, and XL
Drivetrain
SRAM GX Eagle
Geometry
Complete for every size
Source
specialized.com
Checked

Geometry by size

2018 Specialized Fatboy Comp Carbon geometry drawing, size MSide view of the 2018 Specialized Fatboy Comp Carbon frame in size M, drawn to scale from its published geometry, with lettered dimension lines.J 1113A 420mmB 602mmJ 1113mmH 455mmK 60mmC 604mmD 70.5°E 73.0°F 94mmG 434mmN 307mmL 752mmM 496mm
Geometry drawing, size M, to scale.
2018 Specialized Fatboy Comp Carbon geometry by size
MeasurementSMLXL
Reach(mm)395420437458
Stack(mm)602602617632
Head tube angle(°)70.570.570.570.5
Seat tube angle(°)73737373
Effective top tube(mm)579604626651
Chainstay length(mm)455455455455
Wheelbase(mm)1088111311351161
BB drop(mm)60606060
BB height(mm)307307307307
Standover(mm)738.5752778.3807.5
Seat tube length(mm)394434470520
Fork length(mm)496496496496
Head tube length(mm)9494110125

Stock build

13 parts

Drivetrain

SRAM GX Eagle
ShifterFrom the manufacturer: Speeds 12
SRAM GX Eagle
Derailleur
SRAM GX Eagle
CassetteFrom the manufacturer: Range 10-50Weight 452 g
SRAM GX Eagle
Chain
CranksetFrom the manufacturer: Speeds 12

Wheels & Tires

TireFrom the manufacturer: Wheel size 26From the manufacturer: Width 4From the manufacturer: TPI 120 TPI

Brakes

SRAM Level TL
Brake

Cockpit

HandlebarFrom the manufacturer: Width 750mm

Seatpost & Saddle

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Quick answers

Which size or configuration labels have geometry for the 2018 Specialized Fatboy Comp Carbon?
Geometry is listed for S, M, L, and XL.
What are the reach and stack of the 2018 Specialized Fatboy Comp Carbon in size L?
In size L, reach is 437 mm and stack is 617 mm.
What is the head tube angle of the 2018 Specialized Fatboy Comp Carbon?
The head tube angle is 70.5 degrees in every size.
What does the 2018 Specialized Fatboy Comp Carbon ship with?
The stock build includes SRAM GX Eagle, Specialized Ground Control Fat, SRAM Level TL, and Specialized Stout XC.
Which years of the Specialized Fatboy are on Quiver?
Quiver has the Specialized Fatboy for 2018, 2020, 2019, 2017, and 2015.

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